import javax.lang.model.element.VariableElement;

public class Car {


    public static void main(String[] args) {
        //类是模版抽象的，对象是具体的

        Car car1 = new Car();
        Car car2 = new Car();
        Car car3 = new Car();

        System.out.println(car1.hashCode());
        System.out.println(car2.hashCode());
        System.out.println(car3.hashCode());

        Class<? extends Car> aClass = car1.getClass();

        ClassLoader classLoader = aClass.getClassLoader();
        System.out.println(classLoader);//AppClassLoader
        System.out.println(classLoader.getParent());//ExtClassLoader
        System.out.println(classLoader.getParent().getParent());//null 1.不存在 2.java程序获取不到。


    }
}
